One common design problem when designing a database from existing data is the presence of inconsistent values in the received data. False True TRUE ANSWER : ? YOUR ANSWER : ?
Each answer below shows example data from a table. Which answer is an example of the multivalue, multicolumn problem? One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column. Three rows have the values Brown, NULL, and Blue in the same column. Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column. Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row. TRUE ANSWER : ? YOUR ANSWER : ?
When you are given a set of tables and asked to create a database to store their data, the first step is to create the new database. False True TRUE ANSWER : ? YOUR ANSWER : ?
Needing to assess the validity of assumed referential integrity constraints on foreign keys is a(n) ________ of normalization. advantage neither an advantage nor disadvantage either an advantage or disadvantage disadvantage TRUE ANSWER : ? YOUR ANSWER : ?
For a number of reasons, normalizations is not often an advantage for a(n) ________ database. updateable read-only None of these either a read-only or an updateable TRUE ANSWER : ? YOUR ANSWER : ?
The design guidelines and priorities for read-only databases are different because read-only databases are never updated. True False TRUE ANSWER : ? YOUR ANSWER : ?
When assessing the table structure of an acquired set of tables with data, accessing the validity of possible referential integrity constraints on foreign keys is (part of) the: third step. first step. second step. fourth step. TRUE ANSWER : ? YOUR ANSWER : ?
Most of the time, modification anomalies cause problems that are severe enough that a table should be normalized into BCNF. False True TRUE ANSWER : ? YOUR ANSWER : ?
When building a database from an existing set of tables, we may safely assume that referential integrity constraints have been enforced on the data we are given. False True TRUE ANSWER : ? YOUR ANSWER : ?